HR manager contacted me and arranged interview with technical expert. First interview was well organized and I really enjoyed talking with technical expert. Questions were related to algorithms, performance optimization, data structures, language basics and so on. I successfully passed first technical interview, and then was invited to second. Second interview was not so successful., there were problems with appointment interview because HR who invited me for first interview went to vacation but second HR manager didn't know any information about me., technical interview also was
awful., interviewer was late for 30 minutes,. he was sad and didn't listen me., I tried to be polite, answered for all his questions, with examples and explanations., but after one week HR wrote me that my candidacy was rejected for further process, without any explanation.